Apparatus and method to determine plural locations in communication circuits at which failures have occurred
US10409686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Oct 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/85
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus includes first and second circuits that transmit and receive information to and from each other through first paths, where each of the first and second circuits includes second paths respectively coupled to the first paths, and matrix switches that are provided across the second paths and switch a transmission path of information transmitted to any one of the second paths. Upon detecting an error in the second paths, the apparatus conducts a loop-back test in which each matrix switch is switched to a loop-back state in which information to be transmitted to the second path in which the error has been detected, is looped back. Upon detecting an error in the loop-back test, the apparatus switches the matrix switches to a bypass state in which the second path in which the error is detected is bypassed to another one of the second paths to continue the loop-back test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.